[ashark]

Lots of apps (that get made, not that necessarily get used much) are basically CRUD web apps with a smattering of native features being used in a very vanilla way (maybe a little geolocation/gps, maybe you can snap a profile pic with the camera, whatever). Your "shared logic" is HTTP requests, JSON-parsing code, and validating text fields. It would not improve productivity to do that in c/c++ instead of just doing it once each in Swift and Java.

Javascript/RN, yes (at the cost of safety). Plus you can't throw a rock without hitting two JS devs, even in my non-tech-hub city.

Go, as mentioned elsewhere in this thread, would also be appropriate for the task (Google, for the love of god, make it a first class citizen on Android and use that as an excuse to refactor your SDK into something that doesn't seem like it was loosely designed by a committee then handed to the Summer interns to implement with no supervision or clear specs).

[realharo]

>at the cost of safety

Are you talking about type safety? Because you can use TypeScript with React Native too, and it's probably a nicer dev experience than plain JS as well.